Antifriction-bearing.



E. S. WOODSQDECDE A. G. WELCH. EXECUTORL ANIIFRICTION} BEARING.APPLICATION FILED AU.G.22,'!9I2.

1,145,957. PatentedJuly 13, 1915.

2 SHEETS-SHEET I.

E. S. WOODS, DECD.

A. G/WELCH. EXECUTOR.

ANTlFRlCTION BEARING.

APPLICATION FILED AUG.22,1912.

1,145,957. Patented July 13, 1915.

2 SHEETSSHEET 2.

K (lg/32656607 452 Urflr J zdwmmm EDWIN S. WOODS, OF CHICAGO, ILLINOIS;

' snares ALBERT G. WELCE, EXECUTOB OF SAID EDWIN S. WOODS, DECEASED,ASSIGNOR TO ALBERT G. WELCH, TRUSTEE.

ANTIFBICTION-BEARING.

Specification of Letters Patent.

Patented July 13, 1915.

Application filed August 22, 1912. Serial No. 715,398.

To all whom it may concern:

Be it known thatjl, EDWIN S. Wooos, a citizen of the United States, anda resident of Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful improvements in AntitrictionBearings;and I do hereby declare that the following is a full, clear, and exactdescription thereof reference being had to the accompanying drawings,and to the letters of reference marked thereon, which form a part ofthis specification.

This invention relates to improvements in anti-friction hearings and isshown herein as applied to anti-friction center bearings designedto' beinterposed to transmit load between two parts-which are arranged .insubstantially parallel relations with each other and which are capableof limited relatending substantially them.

thereto? tive oscillatory movement aloout an axis exatright angles to Myimproved antifrictien bearing is particularly adapted for use as acenter bearing between the truck and br'i sdy'bolster of a railway carand is herein illustrated and described asapplied to that use,- thoughit will be understood thatit is inno-waylimi'ted The invention asillustrated herein is em bodied in a species of that genus of antit'riotion center bearing'disclosed and broadly claimed in Letters Patent No.995835, granted to 'me on June20,-191l, and consists of certain novelmodifications and improvements applicable not only to the center bearingtherein disclosed, but also to: other* forms of bearings.

A center bearing provided with the im- 'provements oi the presentinvention is like the construction disclosed in the patent referred .toin that it comprises a plurality of antifriction elements interposedbetween relatively oscillatory hearing members, all

of said vantifric tion elementsbeing adapted to oscillate on'axes-radial to the axis of oscillation of said bearing members andhaving contact at their bottom and top surfaces with said bearingmembers and "the cross-section 0t each anti-friction ele ment taken atright angles to ltS axis of merits, the antifricti-on elements in thiscase being parts of cones. Fig. 2 is a View representing a horizontalsection through Fig. i

l in a plane indicated the line 22 thereof. Figs. 3 and tare perspectiveviews of one of the antitriction elements looked at from opposite sides,Figs. 5 and 6 are views representing cross-sections through theantifriction elements in the cylindric surfaces extending through thelines 55 and,

respectively, of Fig. 2. Fig. 7 is awiew similar to Fig. 2 showing aconstruction cohtaining a modified form of the anti friction element.Figs. 8 and 9 are perspecr v ti've views elf/adjacent antifrictionelements of the modified form. Figs. 10 and 11 are views representingvertical sections through the antifriction elements in the vertical cv:

lindric surfaces indicated by the ,lines 101O and l1-11, respectively,of 7.

in illustrating the intention I have shown it as appliedto that type ofantifriction element which is capable of use in a center bearing and inwhich the bearing surfaces of said elements-:are conical, this typebeing the mostconvenient for purposes of illustration, but it willbe'un'derstood that i the term- ,antifriction element as used hereinincludes other types of antifriction elementscapable of use not only incenter hearings, but in other bearings, as, for example,ithose havingspherical or cylindric bearing surfaces, and that the inventionis notlimited to the type illustrated.

Referring now to the drawings, andparticularly to that embodiment f m i'tion illustrated'in Figs "1 to 6 ga ranged antifriction elements whichare-enannularlyi aradjacent its outer end and inner end respectively andan intermediate fullconical part 26. When ass'embledthe full 'conicalparts of each antifriction element mortise into the recessed or cut-awayparts of the adjacent element just as in the first case.

It will be noticed that with the mortise and tenon arrangement by whichthe full. conical parts of the antifriction elements engage with therecessed or cutaway parts of the adjacent elements, as illustrated inthe drawings, the end surfaces of the lateral gaged between the upperand lower bear ing members 11 and 12 andare adapted for oscillatorymovement on horizontal axes radial to the vertical axis about which theprojections of the elements engage the con-,1 tiguous end surfacesof therecessed or cut away portions of the ad acent elements in said bearingmembers themselves oscillate.

Each antifriction element, as shown in Figs. 1 to 11, has top and bottomconic bearing surfaces, tapering from its outer end inwardly. Thelateral faces of the antifriction elements have one or morelongitudinally spaced parts-whichproject beyond the section of loadtransmission of said elements,

and one or more longitudinally spaced cutaway or recessed parts,arranged in alternation with said projecting parts,ithe projecting partsand the recessedorjuf-away parts of the contiguous faces of adjacentelements being relatively arranged in such manner that the projectingpart of each element projects or mortises into a recessed or cut-awaypart in the contiguous face of the adjacent element. 3.5

F ig's. -1 to 6, inclusive, all of the antifi'iction In'the' form. ofthe invention shown in elements are alike. Each element has on onelateral face full conical parts 15"and 16 (see 1 Fig. 4), locatedrespectively adjacent ,its

outer and inner ends and. an intermediate cut-away or recessed part 417,while on its opposite lateral face it has ont-away orne cessed-parts 18,-19*located respectively at its outer and inner ends and an intermediatefull conical part 20. The recessedor cutaway parts and the projectingparts are so arranged and proportioned and the antifric-- tion elementsare assembled in the bearing in circular order in such mannerthat the 50projecting part '20 of each element will proect or, mortise into therecessed .or cut-away part 17 in the contiguous face of the adjacentelement, while the/projecting parts 15, 16 of the latter mentionedelement will such manner that each element resists the end thrust of theadjacent elements. The lateralfaces of the antifrictio'n elements at therecessed or cut-away parts have intermediate conical surfaces,concentricwith the cones of which the elements as wholesform parts, saidconical surfaces being adapted for bearing engagement against theassociated full cone projections of the I adjacent elements whichdove-tail into the recesses, and above and below the same, re-' I versedconical surfaces 28, 28 of substantially the same diameter as said fullconical projections. Saidfsurfaces 27 and 28 are so proportioned invertical extent relatively to the height of the antifriction elements,that whensaid elements have been oscillated in 7 one direction throughone-half of the maxi-' mum'amplitude of oscillationthatthey are designedto"have,,' the projecting conicalparts of the elementswill come to bearin- 1 00 the reversed curved conical surfaces 28 of the ad acentelements and, thus-lock said -elements against further movementv in thatdi-.

, rection. r

The upper bearing'member 11 has a short depending-annularflange 29adapted to take the end thrust of the antifriction elements. The innerbearing surface 30 of said flange is spherical, the center of the spherebeing I .substantially' coincident "with the .cominon point in thevertical axis ofaoscillatior ;of

the bearing members in'which the axes of the conical surfaces of theantifri-ctip'n f ele,-

ments .meet. The end surfaces 31 of,'the

antifriction elements likewise are spher ical,

the end surfaces of all the assembledantifriction elements when inassembled relation I coinciding with-the surface of a sphere co'nmortise into the cut-away or recessed parts centric with the sphericalsurface 30 of the F: if end thrust flange 29. This feature of-theconstruction is. essential since if the ends of 18 and 19 of thefirst-named element. I

As shown in Figs. 7 to 11, the adjacent antifricti'on elements 14*, 14,?are difierent in that the one-14 has on each lateral face full conicalparts 21, 22.10cat'ed adjacent its inthe antifriction elements be madeflat, the

end thrust flange will force the antifriction 'termediate recessed orcut-away part 23 (see Fig. 8)-while the adjacent element has on eachface c'ut-awayor recessed; parts-2.4 and n elements endwise toward thecenter of the ner and outerends respectively .and an inbearing as theyoscillate to one side or the"' members to be thrust apart in a verticaldirection. The surfaces .of the shoulders 32 1 other causing the upperand lowerbearingjl 5 by the lower bearing member.

40 each provided with one or 50 ends oftheantifriction elements anddefining the ends of the latter projections of the antifriction elementsare also made spherical for the same reason.

The antifriction elements are provided at 5 each end with projectinglugs or trunnions 33, 33 and a-raldiall-y extending horizontally annularflange 34.- is provided on' the sleeve 13 and a corresponding similarflange 35 is provided at the outer periphery of the 19 upperbearing'meniber to engage said lugs or trunnions and prevent the anifriotion elements from falling from their assembled relation in theupper bearing member when said antifriction elements are not supportedAs shown'herein, the upper bearing inemher is made in two parts, a partincluding the bearing plate proper 11 and a'band or ring 36 which fitssnugly about the outer go periphery of said bearing plate and ms anannular shoulder 36 against which a correspending annular shoulder ll onsaid hearing plate bears. A. tight fit is preferably made between thetwo parts so that they will be held together by friction. The outersupporting flange is provided on the ring 36 and by reason of thisconstruction both retaining flanges 3%?35, may he made continuous andunbroken, the antifriction elements being assembled before the ring 3%is forced-upon the plate 11.

The upper bearing niemoer is recessed or depressed to form a chamber 34for containing hard oil or' grease and said plate has 35 perforations 33arranged as shown in radr,

ally extending lines above each antifriction element and adapted topermit the passage of the oil or grease to the bearing surf; ces of saidelements. The elements themselves are more apertures 39 in that part oftheir end surfaces which engage with the end thrustfiange 29, and withone or more apertures 40 in their lateral faces as, for example, in theconical lateral projections 15, 16 and 20 (see Figs.

3 and 4,) and 21, 22 and 26 (see Figs. 8 and 9,) which apertures aredesigned to contain hard oil or grease for lubricating the hearingbetween the end thrust flange and the the "bearings between the lateralfaces of the j acent elements. I

The lugs 33? at the inner ends of the anti-- friction elements areprovided with flat lat- 5 eral faces 33, 33 which are so constructedthat the lateral faces of the said lugs of the antrfriction elementswhen assembled are closely adjacent to each other. lhis constructionprevents the antifriction elements 6 from turning over on their sidesand acts to hold them in proper vertical position.

-While in describing my invention 1 have referred to certain details ofconstruction and arrangement as embodie in 1 extending into the rece thepre- -,ferred'ior1n of my invent his to be more longitudinally spacedprojecting parts and one or more recessed parts longitudinally adjacentto said projectin parts, such projecting parts of each antifrictionelement extending into the rece d parts of the adjacent antifrictioneleinei V 2. An antifriction bee. comprising bearing member. an inerposed series of antifriction elements each antifriction element havingon each lateral face one or more longitudinally space 1 and one or morerececse nally adjacent to projecting parts of each an p rts longitncparts, s1 Wicn element A ts of the adjacent antifriction elements. andthe ends of the projecting parts the several antifriction elements havithrust bearing against the ends of the projecting parts of the adjacentelements.

3; Pan antifriction bearin comprising relatively oscillatory bea membersand an interposed series of annnlarly arranged radially disposed,antifriction elements, all of which are adapted to oscillate on axeslocated intermediate said bearing members, the average mean crosssectional area of the several anti-frictionelements taken at right totheir axes of oscillation being substant ally equal to their sections ofload transmission, and each antifriction element having on each lateralface one or more longitudinally spaced projecting parts and one or morerecessed parts longitudinally adjacent to said projecting parts, suchprojecting parts of each antifriction element extending into therecessed parts of the adjacent antifriction elements. I,

4. Pin antifriction bearing,comprising relinterposed series of annul rlyarranged,"radially disposed. antifriction elements, all of which areadapted to oseillate on axes located intermediate said bearing members,the average mean cross sectional area of the several anti=frictionelements taken at rig it angles to their axes of oscillation being sub-istantially equal to their sections of load transmission, and eachantifriction element having on each lateral face one or morelongitudinally spaced parts projecting beyond pointed out in the. ap-

comprising l projecting ts atively oscillatory bearing members and-anwhich are adapted to oscillate on axes located intermediate said bearingmembers, the average mean cross sectional area of the severalanti-friction elements taken at right adjacent.

angles to their axes of oscillation being substantially, equal to theirsections of load transmission, and each antifriction element having oneach lateral face one or more'longitudinally spaced parts projectingbeyond its section of load transmission and one or more recessed partslongitudinally ad acent to said projectingparts, such projecting partsof each antifriction element extending .-into the recessed parts of theadjacent 311th" frictionelements and-:said ele -nents beingeach providedwitheradial lugs at their inner ends having fiat sides, the fiat sidesof of adjacent elements being closely cessed parts of the adjacentelements, and 7 said lugs .6; An' 'antifriction bearing,comprisinrelatively oscillatory bearing members an aninterposed seriesof annularly arranged,

radially disposed, antifriction elements, all

located intermediate said bearing members,

of which are adapted to oscillate on axes the average mean crosssectional area of the" several antifriction elements taken at rightangles to their axes of oscillation being substantially equal to theirsections of load Y transmission, and each antifriction elementgitudinally spaced, inwardly tapering, con'i:

having onieach lateral face one or more 1on- 4 cal parts projectingbeyond its section of disposed, antifriction elements,

load transmissmn and one or more recessed parts longitudinally adjacentto said projecting partsthe projecting parts of each antifrlctionelement extending into the recessed partsof the adjacent antifrictionelements.

' antifriction bearing, comprising relatively oscillatory bearingmembers and an interposed series of contiguous, radially all of whichare adapted to oscillate on axes located intermediate said bearingmembers, the .average mean cross sectional area of the severalantifrictionelements taken at right angles to their axes of oscillationbeingsubstantially equal to their sections of load transmission, andeachantifriction element having on each lateral face one or morelongitudinally spaced, inwardly tapering conical parts projecting beyondits section of load transmission and one or more recessed partslongitudinally adjacent to said parts, said projecting parts of eachantifriction elementmortising into the recessed parts of the adjacentelements, and the lateral faces of said antifriction elements at therecessed parts having an intermediate, longitudinally extending, conicalpart of smaller projecting radius than said projecting parts, and an upper and lower reversed curved conical part.

of substantially the radius of the bearing surfaces of said antifrictionelements.

18." -An antifriction bearing, comprising relatively oscillatory bearingmembers, and

an interposed seriesofcontiguous, radially transmission, and eachantifriction element so tapermg-,con1- having on each lateral face oneor more longitudinally spaced, inwardly cal parts projecting beyond itssectionv of load transmission and one or more recessed partslongitudinally adjacent to said proecting' parts, said projecting parts.of each antifriction' element, mortising' into, the rea the lateralfaces of said 'antifriction 'elements at the recessed parts having aninter:

mediate, longitudinally extending,- conical part of smaller radius thansaid projecting parts, and V an upper and ,lower reversed curved conicalpartof substantially the, radius of the bearin surfacesdof. saidantifriction elements, antifrictionelements being provided with recessesto contain a lubricant for thebeare lateral faces of said ing betweenthe contiguous parts of said I faces.

.9. An an-tifriction bearing, comprising several antifriction elementstaken at right angles to their axes of oscillation being sub stantiallyequal to their sections of load transmission, and each element havingoneach lateral face one or more longitudinally spaced parts projectingbeyond its section of load transmission and one or more recessed partslongitudinally'adjacent to said projecting parts, the projecting partsof each antifriction element mortising into the re cessed parts-of theadjacent elements and being adapted for bearing engagement in saidrecessed parts.

10. An antifriction' bearing, comprising relatively oscillatory bearingmembers and an interposed series of annularly'arranged, radially ofwhichare adapted to oscillate'on axes located intermediate said bearingmembers, the average mean cross sectional areaof the severalantifriction elements taken at right angles to their axes of oscillationbeing subdisposed, antifrictionv elements, all

relatively oscillatory bearing members and e a n interposed series ofannularly arranged, radially disposed, antifri'ction elements, all

stantially equalto their sections of load transmission, and eachantifriction element having on each lateral face'one or morelongitudinally spaced parts projecting beyond its section of loadtransmission and one or parts of'each antifriction element mortisinginto the recessed parts of the adjacent elements, and said projectingparts terminating 'in transversely extending shoulders havingconcentric, spherical bearing surfaces.

In testimony, that I; claim the foregoing as my invention 1 afiix mysignature in the presence of two Witnesses, this 16th day of 15 AngustA.D. 1912. EDWIN S. -'WOODS.

Witnesses: Y

- CLARENCE E. MEHLHOPE,

GEORGE R. WILKINS.

Copies of this 'patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

' Washington, D. G.

